Mean (SE) values of exercise performance, breathing pattern, exercise duration, respiratory pressures, energetics and sensation at rest and maximal exercise (Wmax) for the euvolumic and hyperinflating subjects
| All | Euvolumics | Hyperinflators | ||||
|---|---|---|---|---|---|---|
| Rest | Wmax | Rest | Wmax | Rest | Wmax | |
| To permit comparison between different subjects, Pga data are presented as abdominal pressures (Pab) by subtracting the hydrostatic pressure gradient. | ||||||
| *p<0.05, hyperinflators v euvolumics. | ||||||
| †10 watt. | ||||||
| Exercise duration (min) | 11.8 (1.0) | 8.8 (1.3) | 13.7 (1.4)* | |||
| Wmax (watt) | 29.0 (3.4) | 20.0 (4.2) | 35.0 (4.8)* | |||
| Breathing frequency (/min) | 16.8 (1.0) | 27.3 (1.6) | 18.5 (1.0) | 26.9 (3.1) | 15.59 (1.49) | 27.51 (1.69) |
| Ti (s) | 1.47 (0.11) | 0.91 (0.06) | 1.27 (0.06) | 0.94 (0.10) | 1.61 (0.20) | 0.90 (0.07) |
| Te (s) | 2.41 (0.18) | 1.49 (0.15) | 2.03 (0.13) | 1.62 (0.35) | 2.67 (0.32) | 1.40 (0.14) |
| Minute ventilation (l/min) | 12.7 (1.0) | 37.1 (2.5) | 12.7 (0.9) | 35.9 (4.2) | 12.6 (1.6) | 37.9 (3.2) |
| Maximum Ppl (cm H2O) | 3.5 (1.4) | 14.0 (4.6) | 4.4 (2.9) | 22.6 (8.5) | 2.7 (1.5) | 6.8 (3.4) |
| Maximum Pab (cm H2O) | 5.8 (1.7) | 14.2 (4.6) | 6.7 (3.7) | 22.1 (9.0) | 5.1 (2.0) | 7.6 (2.6) |
| Work of breathing (cm H2O·l/min) | 140 (31) | 456 (132)† | 155 (12) | 754 (228)† | 130 (47) | 277 (77)*† |
| Oxygen consumption (ml/min) | 259 (14) | 558 (20)† | 248 (10) | 539 (29)† | 267 (25) | 570 (29)† |
| Heart rate (bpm) | 86 (5) | 104 (3) | 95 (6) | 102 (6) | 80 (6) | 105 (3) |
| Breathlessness | 0.8 (0.3) | 4.8 (0.5) | 1.1 (0.5) | 4.9 (0.9) | 0.6 (0.3) | 4.8 (0.5) |
| Leg effort | 1.6 (0.5) | 5.6 (0.5) | 3.1 (0.6) | 6.6 (0.8) | 0.6 (0.3)* | 4.9 (0.5) |